<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 13:30:00.000"
URSICode="SAA0K"
StationName="SaoLuis"
GeoLatitude="-2.6"
GeoLongitude="315.8"
Source="Ionosonde"
SourceType="DPS-4"
ScalerType="auto">
<SystemInfo UMLStationID="903">
<FrequencyStepping StartFrequency="1.0" StopFrequency="15.0">
<LinearStepping Step="0.05" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="5.0" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</Comments>
<ContactPerson>
<Name>Dr. Mangalathayil Ali Abdu</Name>
<Affiliation>INPE, Division of Aeronomy</Affiliation>
<Address>Av dos Astronautas, 1.758 Jd. Granja - CEP: 12227-010 Sao Jose dos Campos - SP Brasil</Address>
<Email>maabdu@dae.inpe.br</Email>
</ContactPerson>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.10.17 (290) 13:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-19.74" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="-1.0" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202629010171330009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.640" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.101" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="110.000" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="20.000" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="3.345" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.340" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="353.378" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="257.809" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.261" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="125.366" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="50.443" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.171" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="167.980" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.200" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="116">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 330.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 333.333 331.667 330.000 335.000 335.000 335.000 336.667 338.333 340.000 340.000 337.500 335.000 335.000 336.835 338.671 340.506 342.342 344.177 346.013 347.848 349.684 351.519 353.354 355.190 357.025 358.861 360.696 362.532 364.367 366.203 368.038 369.873 371.709 373.544 375.380 377.215 379.051 380.886 382.722 384.557 386.392 388.228 390.063 391.899 393.734 395.570 397.405 399.241 401.076 402.911 404.747 406.582 408.418 410.253 412.089 413.924 415.759 417.595 419.430 421.266 423.101 424.937 426.772 428.608 430.443 432.278 434.114 435.949 437.785 439.620 441.456 443.291 445.127 446.962 448.797 450.633 452.468 454.304 456.139 457.975 459.810 461.646 463.481 465.316 467.152 468.987 470.823 472.658 474.494 476.329 478.165 480.000 485.000 491.224 498.313 506.462 515.928 527.057 540.331 556.434 576.381 601.733
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 54 48 51 0 60 0 0 66 0 63 60 63 63 0 0 57 75 78 81 0 0 0 84 0 78 78 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 48 0 51 45 0 51 45 0 0 48 48 51 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 2.734375 -1.953125 2.734375 1.171875 -1.171875 0.390625 1.171875 -1.953125 -2.734375 1.171875 -1.171875 -2.734375 -1.953125 1.953125 -1.171875 1.171875 -0.390625 -1.953125 -1.171875 0.390625 -1.953125 1.953125 -0.390625 -1.171875 -2.734375 0.390625 1.953125 -1.171875 0.390625 -0.390625 1.171875 -1.171875 2.734375 -1.171875 1.171875 -2.734375 -2.734375 2.734375 1.953125 2.734375 -2.734375 1.953125 -1.953125 1.171875 2.734375 -1.171875 1.953125 2.734375 -0.390625 0.390625 -0.390625 -2.734375 0.390625 -1.171875 -1.171875 1.171875 -2.734375 -0.390625 1.171875 -2.734375 0.390625 -1.171875 0.390625 -1.171875 0.390625 1.953125 1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 2.734375 0.390625 0.390625 0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.49 90.0 95.0 100.0 105.0 110.0 111.734 113.468 115.0 115.202 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 353.378 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.25 2.895 3.236 3.345 3.222 3.222 3.331 3.345 3.539 3.717 3.882 4.038 4.19 4.339 4.487 4.634 4.78 4.927 5.075 5.224 5.374 5.527 5.681 5.838 5.997 6.158 6.323 6.49 6.661 6.835 7.012 7.192 7.376 7.564 7.755 7.95 8.148 8.35 8.555 8.764 8.974 9.188 9.402 9.618 9.833 10.047 10.256 10.46 10.655 10.837 11.002 11.145 11.261 11.344 11.391 11.4 11.399 11.391 11.371 11.342 11.304 11.257 11.201 11.138 11.067 10.989 10.905 10.815 10.719 10.618 10.512 10.403 10.289 10.172 10.051 9.928 9.802 9.674 9.544 9.412 9.279 9.145 9.01 8.874 8.737 8.601 8.464 8.327 8.191 8.055 7.919 7.784 7.65 7.516 7.384 7.252 7.122 6.993 6.865 6.739 6.613 6.49 6.367 6.247 6.127 6.01 5.894 5.78 5.667 5.556 5.446 5.339 5.233 5.128 5.026 4.925 4.825 4.728 4.632 4.537 4.445 4.354 4.265 4.177 4.091 4.006 3.923 3.842 3.762 3.683 3.607 3.531 3.457 3.385 3.314 3.244 3.175 3.108 3.043 2.978 2.915 2.854 2.793 2.734 2.676 2.619 2.563 2.508 2.455 2.402 2.351 2.301 2.252 2.203 2.156 2.11 2.065 2.02 1.977 1.935 1.893 1.852 1.812 1.773 1.735 1.698 1.661 1.625 1.59 1.556 1.523 1.49 1.458 1.426 1.395 1.365 1.336 1.307 1.279 1.251 1.224 1.197 1.172 1.146 1.121 1.097

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.345" PeakHeight="110.0" Num="3" Error="0.0">
-30.468 13.103 -3.145
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.345" EndFrequency="11.4" PeakHeight="353.378" Num="5" zHalfNm="257.809" Error="4.053">
-197.47 -54.666 12.021 1.552 0.387
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.202" Depth="0.123"/>
<TopsideChapman PeakHeight="353.378" PeakDensity="1612407.0" PeakScaleHeight="71.171" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
